House Natural Resources Committee Chairman Doc Hastings (R-Wash.) subpoenaed the Interior Department Thursday over planned regulations aimed at curbing environmental damage from Appalachian coal mining.

The subpoena, which was authorized by Republicans on the committee late last month, requires Interior to provide all documents related to the planned regulations by noon on April 12.

It’s the second time this week that Hastings has subpoenaed the Interior Department. The lawmaker issued a subpoena Tuesday for all documents related to a 2010 report that erroneously suggested that outside engineers had endorsed a deepwater drilling freeze following the BP oil spill.

House Republicans have taken aim at Interior’s plans to rework rules issued at the tail end of the George W. Bush administration that regulate the dumping of debris from mountaintop-removal coal mining into nearby waterways.

Republicans argue the Obama administration’s planned rules could cost jobs and burden the coal industry.